Does your SSDs have TRIM Support? There is a good chance that TRIM Support is disabled and it was done by Apple to prevent damage the drive and your data. To verify, go to About This Mac and then click on the System Report. In the System Report, look for Hardware > SATA/SATA Express and take a look at the drives for related info below.

Samsung SSD 860 QVO 1TB:
Capacity: 1 TB (1,000,204,886,016 bytes)
Model: Samsung SSD 860 QVO 1TB
Revision: RVQ01B6Q
Serial Number: XXXXXXXXXXXXXXX
Native Command Queuing: Yes
Queue Depth: 32
Removable Media: No
Detachable Drive: No
BSD Name: disk0
Medium Type: Solid State
TRIM Support: Yes
Partition Map Type: GPT (GUID Partition Table)
S.M.A.R.T. status: Verified

macOS Terminal Commands
sudo trimforce – Lists the options
sudo trimforce disable – Disables
sudo trimforce enable – Enables
sudo trimforce help – Lists the options

IMPORTANT NOTICE: This tool force-enables TRIM for all relevant attached
devices, even though such devices may not have been validated for data
integrity while using TRIM. Use of this tool to enable TRIM may result in
unintended data loss or data corruption. It should not be used in a commercial
operating environment or with important data. Before using this tool, you
should back up all of your data and regularly back up data while TRIM is
enabled. This tool is provided on an “as is” basis. APPLE MAKES NO WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF
NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE,
REGARDING THIS TOOL OR ITS USE ALONE OR IN COMBINATION WITH YOUR DEVICES,
SYSTEMS, OR SERVICES. BY USING THIS TOOL TO ENABLE TRIM, YOU AGREE THAT, TO THE
EXTENT PERMITTED BY APPLICABLE LAW, USE OF THE TOOL IS AT YOUR SOLE RISK AND
THAT THE ENTIRE RISK AS TO SATISFACTORY QUALITY, PERFORMANCE, ACCURACY AND
EFFORT IS WITH YOU.
Are you sure you wish to proceed (y/N)? Y
Your system will immediately reboot when this is complete.
Is this OK (y/N)? Y
Enabling TRIM…
.
.
Operation succeeded. Your system will reboot momentarily, please wait…

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Stephan Pringle

Technology Support Specialist at Sipylus

About The Author: Stephan Pringle is an Information Technology Support Specialist. He covers hardware and software and provides tips for you to troubleshoot and repair issues on your own. In his spare time, he writes articles about the State of New York on his Hackintosh and HackBook and that has helped him to become the top contributor of the New York City section of Yahoo! Answers.

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